If you are facing problem of css and js page load design after installation in magento2 please follow the following step-:
open the terminal and navigate to magento web root
$ cd /var/www/html/magento2
Step 1.
$ php bin/magento setup:static-content:deploy
Step 2.
$ php bin/magento indexer:reindex
Step 3.
make sure apache “rewrite_module” is enable and then restart the server
Step 4.
$ chown -R www-data:www-data /var/www/html/magento2
Step 5.
$ cd <your Magento install dir>
find . -type f -exec chmod 644 {} \; // 644 permission for files
find . -type d -exec chmod 755 {} \; // 755 permission for directory
find ./var -type d -exec chmod 777 {} \; // 777 permission for var folder
find ./pub/media -type d -exec chmod 777 {} \;
find ./pub/static -type d -exec chmod 777 {} \;
chmod 777 ./app/etc
chmod 644 ./app/etc/*.xml
chown -R :<web server group> .
chmod u+x bin/magento
Step 6.
delete cache folder under var/cache
The above step working. I hope this will work for you also.